I only have 3 days in Bangkok but really want to visit Chiang Mai. I'm thinking of taking a cheap flight (AirAsia, NokAir) up and back on the same day, but am wondering if this would be good enough to at least see some of the city and the famous Wat there? I don't mind a long travel day and was thinking of catching a 9am flight out of BKK or DonMuaeng (old airport) and then a 9 or 10pm flight back from Chiang Mai.
Does this sound feasible? I will be able to see other parts of Thailand on other days (Kanchanaburi, etc), so what I'm particularily interested in is how to fit in Chiang Mai.
Thanks for any thoughts you can share.